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Financial Instruments - Financial Assets and Liabilities by Category (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Disclosure of Financial Assets and Liabilities [Line Items]    
Financial assets $ 394,125 $ 456,190
Derivatives [member]    
Disclosure of Financial Assets and Liabilities [Line Items]    
Financial liabilities 1,780 351
Debt [member]    
Disclosure of Financial Assets and Liabilities [Line Items]    
Financial liabilities 193,722 15,300
Cash and cash equivalents [member]    
Disclosure of Financial Assets and Liabilities [Line Items]    
Financial assets 107,005 283,550
Trade receivables from provisional concentrate sales [member]    
Disclosure of Financial Assets and Liabilities [Line Items]    
Financial assets 50,258 40,020
Receivables not arising from sale of metal concentrates [member]    
Disclosure of Financial Assets and Liabilities [Line Items]    
Financial assets 77,442 76,902
Short-term investments | Equity securities [member]    
Disclosure of Financial Assets and Liabilities [Line Items]    
Financial assets 35,337 51,723
Long-term investment | Other than equity securities [member]    
Disclosure of Financial Assets and Liabilities [Line Items]    
Financial assets 121,200  
Derivatives [member]    
Disclosure of Financial Assets and Liabilities [Line Items]    
Financial assets 2,883 3,995
Amortized cost [member] | Derivatives [member]    
Disclosure of Financial Assets and Liabilities [Line Items]    
Financial liabilities 0 0
Amortized cost [member] | Debt [member]    
Disclosure of Financial Assets and Liabilities [Line Items]    
Financial liabilities 193,722 15,300
FVTPL [member] | Derivatives [member]    
Disclosure of Financial Assets and Liabilities [Line Items]    
Financial liabilities 1,780 351
FVTPL [member] | Debt [member]    
Disclosure of Financial Assets and Liabilities [Line Items]    
Financial liabilities 0 0
FVTOCI [member] | Derivatives [member]    
Disclosure of Financial Assets and Liabilities [Line Items]    
Financial liabilities 0  
FVTOCI [member] | Debt [member]    
Disclosure of Financial Assets and Liabilities [Line Items]    
Financial liabilities 0  
Amortized cost [member]    
Disclosure of Financial Assets and Liabilities [Line Items]    
Financial assets 184,447 360,452
Amortized cost [member] | Cash and cash equivalents [member]    
Disclosure of Financial Assets and Liabilities [Line Items]    
Financial assets 107,005 283,550
Amortized cost [member] | Trade receivables from provisional concentrate sales [member]    
Disclosure of Financial Assets and Liabilities [Line Items]    
Financial assets 0 0
Amortized cost [member] | Receivables not arising from sale of metal concentrates [member]    
Disclosure of Financial Assets and Liabilities [Line Items]    
Financial assets 77,442 76,902
Amortized cost [member] | Short-term investments | Equity securities [member]    
Disclosure of Financial Assets and Liabilities [Line Items]    
Financial assets 0 0
Amortized cost [member] | Long-term investment | Other than equity securities [member]    
Disclosure of Financial Assets and Liabilities [Line Items]    
Financial assets 0  
Amortized cost [member] | Derivatives [member]    
Disclosure of Financial Assets and Liabilities [Line Items]    
Financial assets 0 0
FVTPL [member]    
Disclosure of Financial Assets and Liabilities [Line Items]    
Financial assets 88,478 95,738
FVTPL [member] | Cash and cash equivalents [member]    
Disclosure of Financial Assets and Liabilities [Line Items]    
Financial assets 0 0
FVTPL [member] | Trade receivables from provisional concentrate sales [member]    
Disclosure of Financial Assets and Liabilities [Line Items]    
Financial assets 50,258 40,020
FVTPL [member] | Receivables not arising from sale of metal concentrates [member]    
Disclosure of Financial Assets and Liabilities [Line Items]    
Financial assets 0
FVTPL [member] | Short-term investments | Equity securities [member]    
Disclosure of Financial Assets and Liabilities [Line Items]    
Financial assets 35,337 51,723
FVTPL [member] | Long-term investment | Other than equity securities [member]    
Disclosure of Financial Assets and Liabilities [Line Items]    
Financial assets 0  
FVTPL [member] | Derivatives [member]    
Disclosure of Financial Assets and Liabilities [Line Items]    
Financial assets 2,883 $ 3,995
FVTOCI [member]    
Disclosure of Financial Assets and Liabilities [Line Items]    
Financial assets 121,200  
FVTOCI [member] | Cash and cash equivalents [member]    
Disclosure of Financial Assets and Liabilities [Line Items]    
Financial assets 0  
FVTOCI [member] | Trade receivables from provisional concentrate sales [member]    
Disclosure of Financial Assets and Liabilities [Line Items]    
Financial assets 0  
FVTOCI [member] | Receivables not arising from sale of metal concentrates [member]    
Disclosure of Financial Assets and Liabilities [Line Items]    
Financial assets 0  
FVTOCI [member] | Short-term investments | Equity securities [member]    
Disclosure of Financial Assets and Liabilities [Line Items]    
Financial assets 0  
FVTOCI [member] | Long-term investment | Other than equity securities [member]    
Disclosure of Financial Assets and Liabilities [Line Items]    
Financial assets 121,200  
FVTOCI [member] | Derivatives [member]    
Disclosure of Financial Assets and Liabilities [Line Items]    
Financial assets $ 0